The Beagle board uses OMAP3+TWL4030. TWL4030 is the previous version of TPS65950. In terms of hardware and software the two devices are identical, meaning completely pin and software compatible.
You can use the following site as a reference for building schematics, layouts, gerbers and BOM - http://beagleboard.org/hardware/design
You can also join the Beagle community for any Linux/open source questions. Read more about this at http://beagleboard.org/
All documents available for TPS65950, TPS65930 and TPS65920 can be found at the following link - http://focus.ti.com/docs/prod/folders/print/tps65950.html
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